I know this thread is a bit old, but the OP seems to be an active poster so here goes:
Assuming you have the 3.0L engine as opposed to the older 2.8L, service intervals are:
Change engine oil & filter, and fuel filter. Reduce to 30,000km if not using approved Iveco oil. Visual checks on brake fluid level, aux belts, fuel pre-filter for clogging, steering box cover, brake condition and handbrake travel.
As above, plus: Change fuel pre-filter, gearbox oil, rear axle oil and clean breather, aux drive belts. Check steering column articulation and linkages, steering box fixing, check propellor shaft and UJ's.
80,000km - Check airflow meter with Modus
240,000km - Change timing belt and tensioner, change tensioner for alternator belt. Change preheater glow plugs.
In case of low mileage:
Every 1 year: Change engine oil and filter.
Every 2 years: Change brake fluid.
Every 3 years: Change engine coolant.
Every 4 years: Change aux belts.
Every 5 years: Change timing belt.
The above also applies to the 2.3L engine.